How to pick the best cruises to see the northern lights, eclipses, and galaxies, according to an astrophysicist

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• Astrophysicist Hakeem M. Oluseyi has seen the stars from many cruises.
• As long as the ships dim their lights, passengers should be able to stargaze from the sea.
• Cruise lines also plan trips for celestial events like eclipses and the northern lights.

Astrophysicist Hakeem M. Oluseyi has been to dark sky parks and observatories all over the world, but some...